From 9d77e5ba47ce5d4e23370e48ff1783b5df478735 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 9 Apr 2010 20:45:04 +0000
Subject: [PATCH] add minix support, patch by Kees van Reeuwijk!  PR6797

llvm-svn: 100895
---
 autoconf/configure.ac                              |  7 +++++++
 lib/Support/raw_ostream.cpp                        |  3 ++-
 lib/System/DynamicLibrary.cpp                      | 14 ++++++++++++++
 lib/Transforms/Makefile                            |  2 +-
 runtime/Makefile                                   |  2 +-
 .../googletest/include/gtest/internal/gtest-port.h |  3 ++-
 6 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 04c0886ab78..bd85577bcbd 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -159,6 +159,11 @@ AC_CACHE_CHECK([type of operating system we're going to host on],
     llvm_cv_no_link_all_option="-Wl,-noall_load"
     llvm_cv_os_type="Darwin"
     llvm_cv_platform_type="Unix" ;;
+  *-*-minix*)
+    llvm_cv_link_all_option="-Wl,-all_load"
+    llvm_cv_no_link_all_option="-Wl,-noall_load"
+    llvm_cv_os_type="Minix"
+    llvm_cv_platform_type="Unix" ;;
   *-*-freebsd*)
     llvm_cv_link_all_option="-Wl,--whole-archive"
     llvm_cv_no_link_all_option="-Wl,--no-whole-archive"
@@ -247,6 +252,8 @@ AC_CACHE_CHECK([type of operating system we're going to target],
     llvm_cv_target_os_type="Cygwin" ;;
   *-*-darwin*)
     llvm_cv_target_os_type="Darwin" ;;
+  *-*-minix*)
+    llvm_cv_target_os_type="Minix" ;;
   *-*-freebsd*)
     llvm_cv_target_os_type="FreeBSD" ;;
   *-*-openbsd*)
diff --git a/lib/Support/raw_ostream.cpp b/lib/Support/raw_ostream.cpp
index 7a02db1aeb3..0b05c5449ae 100644
--- a/lib/Support/raw_ostream.cpp
+++ b/lib/Support/raw_ostream.cpp
@@ -442,7 +442,8 @@ uint64_t raw_fd_ostream::seek(uint64_t off) {
 }
 
 size_t raw_fd_ostream::preferred_buffer_size() const {
-#if !defined(_MSC_VER) && !defined(__MINGW32__) // Windows has no st_blksize.
+#if !defined(_MSC_VER) && !defined(__MINGW32__) && !defined(_MINIX)
+  // Windows and Minix have no st_blksize.
   assert(FD >= 0 && "File not yet open!");
   struct stat statbuf;
   if (fstat(FD, &statbuf) != 0)
diff --git a/lib/System/DynamicLibrary.cpp b/lib/System/DynamicLibrary.cpp
index d6f3140a88e..ebc8acf3061 100644
--- a/lib/System/DynamicLibrary.cpp
+++ b/lib/System/DynamicLibrary.cpp
@@ -44,6 +44,7 @@ void llvm::sys::DynamicLibrary::AddSymbol(const char* symbolName,
 
 #else
 
+#if HAVE_DLFCN_H
 #include <dlfcn.h>
 using namespace llvm;
 using namespace llvm::sys;
@@ -68,6 +69,17 @@ bool DynamicLibrary::LoadLibraryPermanently(const char *Filename,
   OpenedHandles->push_back(H);
   return false;
 }
+#else
+
+using namespace llvm;
+using namespace llvm::sys;
+
+bool DynamicLibrary::LoadLibraryPermanently(const char *Filename,
+                                            std::string *ErrMsg) {
+  if (ErrMsg) *ErrMsg = "dlopen() not supported on this platform";
+  return true;
+}
+#endif
 
 namespace llvm {
 void *SearchForAddressOfSpecialSymbol(const char* symbolName);
@@ -84,6 +96,7 @@ void* DynamicLibrary::SearchForAddressOfSymbol(const char* symbolName) {
       return I->second;
   }
 
+#if HAVE_DLFCN_H
   // Now search the libraries.
   if (OpenedHandles) {
     for (std::vector<void *>::iterator I = OpenedHandles->begin(),
@@ -95,6 +108,7 @@ void* DynamicLibrary::SearchForAddressOfSymbol(const char* symbolName) {
       }
     }
   }
+#endif
 
   if (void *Result = llvm::SearchForAddressOfSpecialSymbol(symbolName))
     return Result;
diff --git a/lib/Transforms/Makefile b/lib/Transforms/Makefile
index ea4a1158acc..e527be25dec 100644
--- a/lib/Transforms/Makefile
+++ b/lib/Transforms/Makefile
@@ -13,7 +13,7 @@ PARALLEL_DIRS = Utils Instrumentation Scalar InstCombine IPO Hello
 include $(LEVEL)/Makefile.config
 
 # No support for plugins on windows targets
-ifeq ($(HOST_OS), $(filter $(HOST_OS), Cygwin MingW))
+ifeq ($(HOST_OS), $(filter $(HOST_OS), Cygwin MingW Minix))
   PARALLEL_DIRS := $(filter-out Hello, $(PARALLEL_DIRS))
 endif
 
diff --git a/runtime/Makefile b/runtime/Makefile
index 7209867c2f6..d0e85d58264 100644
--- a/runtime/Makefile
+++ b/runtime/Makefile
@@ -20,7 +20,7 @@ ifeq ($(ARCH), Sparc)
 PARALLEL_DIRS := $(filter-out libprofile, $(PARALLEL_DIRS))
 endif
 
-ifeq ($(TARGET_OS), $(filter $(TARGET_OS), Cygwin MingW))
+ifeq ($(TARGET_OS), $(filter $(TARGET_OS), Cygwin MingW Minix))
 PARALLEL_DIRS := $(filter-out libprofile, $(PARALLEL_DIRS))
 endif
 
diff --git a/utils/unittest/googletest/include/gtest/internal/gtest-port.h b/utils/unittest/googletest/include/gtest/internal/gtest-port.h
index 3e49993bff4..20a95c9b2ec 100644
--- a/utils/unittest/googletest/include/gtest/internal/gtest-port.h
+++ b/utils/unittest/googletest/include/gtest/internal/gtest-port.h
@@ -227,9 +227,10 @@
 // TODO(wan@google.com): uses autoconf to detect whether ::std::wstring
 //   is available.
 
-#if defined(GTEST_OS_CYGWIN) || defined(GTEST_OS_SOLARIS) || defined(GTEST_OS_HAIKU)
+#if defined(GTEST_OS_CYGWIN) || defined(GTEST_OS_SOLARIS) || defined(GTEST_OS_HAIKU) || defined(_MINIX)
 // At least some versions of cygwin don't support ::std::wstring.
 // Solaris' libc++ doesn't support it either.
+// Minix currently doesn't support it either.
 #define GTEST_HAS_STD_WSTRING 0
 #else
 #define GTEST_HAS_STD_WSTRING GTEST_HAS_STD_STRING